ChatGPT maker OpenAI said its latest powerful artificial intelligence model series will be released to the public on Thursday, as the US government reportedly approved a broader launch. It follows a similar story at OpenAI's archrival Anthropic, which last week said it would begin restoring access globally to its most powerful AI models, Fable 5 and Mythos 5, after the US government lifted a restriction on where they could be released. bur-kaf/tc